Gray eyes are a less common eye color. While they may look similar to blue eyes, they often have a silvery or smokey appearance, sometimes with hints of green or hazel. Only about three percent of ...

From a scientific perspective, green eye color is the result of a subtle mix between iris pigmentation and light diffusion.

In humans, phenotypically, eye color falls into one of these basic categories -brown, blue or green. Brown eyes are the most common (due to their dominant nature), followed by blue and then green.